在进行软件结构设计时，应遵循的主要原理是 【3】 。
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When is the Paris conference
A. \r\n \r\n \r\n September\r\n \r\n S\r\n M\r\n T\r\n W\r\n T\r\n F\r\n S\r\n \r\n \r\n \r\n \r\n \r\n \r\n 1\r\n 2\r\n \r\n 3\r\n 4\r\n 5\r\n 6\r\n 7\r\n 8\r\n 9\r\n \r\n 10\r\n 11\r\n 12\r\n [13]\r\n [14]\r\n [15]\r\n [16]\r\n \r\n [17]\r\n 18\r\n 19\r\n 20\r\n 21\r\n 22\r\n 23\r\n \r\n 24\r\n 25\r\n 26\r\n 27\r\n 28\r\n 29\r\n 30
B. \r\n \r\n \r\n September\r\n \r\n \r\n M\r\n T\r\n W\r\n T\r\n F\r\n S\r\n \r\n \r\n \r\n \r\n \r\n \r\n 1\r\n 2\r\n \r\n 3\r\n 4\r\n 5\r\n 6\r\n 7\r\n 8\r\n 9\r\n \r\n 10\r\n 11\r\n 12\r\n 13\r\n [14]\r\n [15]\r\n [16]\r\n \r\n 17\r\n 18\r\n 19\r\n 20\r\n 21\r\n 22\r\n 23\r\n \r\n 24\r\n 25\r\n 26\r\n 27\r\n 28\r\n 29\r\n 30
C. \r\n \r\n \r\n September\r\n \r\n \r\n M\r\n T\r\n W\r\n T\r\n F\r\n S\r\n \r\n \r\n \r\n \r\n \r\n \r\n 1\r\n 2\r\n \r\n 3\r\n 4\r\n 5\r\n 6\r\n 7\r\n 8\r\n 9\r\n \r\n 10\r\n 11\r\n 12\r\n [13]\r\n [14]\r\n [15]\r\n [16]\r\n \r\n 17\r\n 18\r\n 19\r\n 20\r\n 21\r\n 22\r\n 23\r\n \r\n 24\r\n 25\r\n 26\r\n 27\r\n 28\r\n 29\r\n 30
Bungling (笨手笨脚的) space organizations apart, the only mode of travel open to microbes seems to be meteorites (流星). Most of these are small bits of junk from the asteroid (小行星) belt that have gone off course. But some are rocks that have been flung into space from the surfaces of planets as a result of those planets having been struck by even larger bits of rock—decent-sized asteroids or comets.
将文中所有的错词“声明科学”替换为“生命科学”：将标题段(“生命科学是中国发展的机遇”)设置为红色、三号、仿宋—CB2312、居中、加波浪线下划线。 (2)将正文各段落(“新华网北京……进一步研究和学习”)设置为首行缩进2字符，行距 18磅，段前间距1行。 (3)将正文第3段(“他认为……进一步研究和学习”)分为等宽的两栏、栏间距为2字符、栏间加分隔线，并以原文件名保存文档。
在IEEE 802参考模型中，MAC层实现______访问控制功能。
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